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Subject:

Re: Ta furnace spare parts

From:

Margarita Lopez <[log in to unmask]>

Reply-To:

Noble Gas Geochemistry Network <[log in to unmask]>

Date:

Tue, 29 Nov 2005 08:14:45 -0800

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (119 lines)

Hello,

Yes I'm interested, count me in.

Margarita Lopez Martinez
Dept. Geologia, CICESE
Ensenada, Baja California, Mexico

At 12:10 PM 11/29/2005 +0100, you wrote:
>Hi to all
>
>My experience has been the same with Ken, and I am still waiting for parts 
>paid last june !
>
>I wonder if all users of Heines's furnaces could put up a groupped order 
>(at Thermoshield for example) in order to try to have lower prices for 
>heating filaments and crucibles if we order "plenty" of them (I have no 
>idea how many "plenty" would mean)...
>
>How does that sound ?
>
>Nick
>
>At 14:18 16/11/2005 -0800, Martin S. Wong wrote:
>>Hi all,
>>Our experience at UC Santa Barbara has been the same with regards to Ken 
>>Heine, so we've looked for other resources.  We recently had a coiled 
>>heater element that sagged and contacted the heat shield, melting part of 
>>it.  A company called Thermosheild in Palo Alto, CA, was able to provide 
>>new furnace sheilding based on our measurements of the Heine furnace 
>>design.  Although I'm not at Santa Barbara now, reports are that the new 
>>heat shielding was of superior design to the Heine version.  Contact info 
>>for thermoshield is:
>>Thermo Shield
>>722 Orange Avenue
>>Los Altos, CA  94022-3849
>>ph: 650-941-5230
>>fax: 650-941-2568
>>e-mail: [log in to unmask]
>>Main contact: Bernard Scheiff, [log in to unmask]
>>http://www.thermoshld.com/
>>
>>Thermoshield also was able to provide moly tubing for fabrication of moly 
>>crucibles.  The moly tubing was about $330 from thermoshield for 
>>appropriate length and gauge.  We had our crucibles fabricated by Applied 
>>Fusion (at Andy Calvert's suggestion from USGS in Menlo), which cost 
>>another $375 per crucible (so total cost was about $700 per crucible if 
>>bought in reasonable numbers and the moly crucibles seem to last longer 
>>than the Niobium ones).  Their contact info is:
>>Applied Fusion
>>1915 Republic Avenue
>>San Leandro, CA  94577
>>ph: 510-351-8314
>>fax: 510-351-0692
>>[log in to unmask]
>>Ron Musgrove - CEO
>>Ron Holton - VP Fabrication
>>http://www.appliedfusioninc.com/
>>
>>Dave - in response to your question on thermocouples, we had a custom 
>>thermocouple made by our physics machine shop which consisted of an Omega 
>>unsheathed fine gauged type C thermocouple that comes with a bead at the 
>>top (T5R and T3R series).  The bare wires can be fed through a standard 
>>2-hole ceramic thermocouple insulator, also available from Omega.  We then 
>>designed a teflon cylinder with a blind hole drilled into the top designed 
>>to hold the thermocouple insulator.  The blind hole had small holes in 
>>either side to feed the thermcouple wires through the blind hole to the 
>>outside of the cylinder.  The teflon cylinder is slotted at the base to 
>>fit into a standard conflat flange electrical feedthrough.  We put small 
>>set screws into the electrical contacts to attach the thermocouple wires 
>>into each feedthrough and covered the teflon base with shrink wrap to 
>>avoid having the thermocouple wires touching anything.  If the 
>>thermocouple breaks, you can just swap out the beaded wire, which is a 
>>stock item from Omege for about $60-$80, which is much cheaper than what 
>>Heine was charging for repairs and with a faster turnaround time.  It 
>>sounds a bit more complicated than it actually is.  I can have someone 
>>take some photos if you are interested.
>>
>>Hope this is helpful.
>>
>>Cheers,
>>Martin
>>
>>--
>>Martin Wong                           [log in to unmask]
>>Graduate Student                      www.uweb.ucsb.edu/~mwong
>>Dept. of Geological Sciences          Phone: (805)893-2782
>>UC Santa Barbara                      Fax:   (805)893-2314
>>Santa Barbara, CA 93106
>>
>>Current contact info:
>>Visiting Assistant Professor
>>Department of Geology Colgate University 13 Oak Drive Hamilton, NY   13346
>>
>>Ph 315/228-7203 Fax 315/228-7187 [log in to unmask]
>
>
>*********************************************
>Dr Nicolas ARNAUD, PhD
>Chargé de recherche CNRS
>Directeur de la Fédération de Recherche 2035-ISTEEM
>
>UMR 5573 CNRS, Laboratoire de Dynamique de la Lithosphère (LDL).
>Groupe de Géochronologie
>CC 066
>I S T E E M - U S T L
>Place Eugène Bataillon
>34095 Montpellier Cedex 5
>FRANCE
>
>Tel: (33 0) 467143729
>Fax: (33 0) 467143729
>
>[log in to unmask]
>___________________________________________
>
>
[log in to unmask]

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